My mate has an NA and lately the spark is disappearing intermittently. He will just be driving along and the engine will die. Test for spark (so far tested at leads and after coil) and nothing. Try the car again the next day (to fix problem) and what do you know it works again.

The top radiator hose and thermostat housing was dodgy (signs of leaking) so we thought it might be leaking water onto the TFI or distributor, so we replaced these and it still does it.

I would try another distributor, dont muck around with the TFI or the Hall Effect sensor inside the dissy, its cheaper to fit a whole new dissy. Last one I replaced, I got from Repco, and it was a recon unit, good as new, for less than 200 bucks.

yep, as above, I had a dodgy dizzy in me ea, i had very poor spark and crap performance, replaced it and she was all good.
Also, if the water has been dripping onto the stupidly positioned coil, it can crack the casing and cause dramas

I had a similar problem with my EB11 would come back from shopping and...... dead, no spark. Once I was driving and it just cut out completly again, no spark. Called the RACV out and what do you know the *ucker started. He reckons it was in the electronics and common. Two things had to be replaced. I can't remember what they were. These issues were sometimes months apart. Hope that helps

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